I have a 1996 Speedster, stored last winter under cover at a friends. Got back with a broken reverse gate on starboard side. Still functional but afraid breakage will worsen. Can't find part anywhere. Because it is plastic I'm thinking it could be repaired with fiberglass.
There are several I saw cross referenced as working for many different models, unfortunately mine was not one of those listed. If nothing else pops up here I may get back to you with measurements and additional pictures. Do your skis powered by 717's?